Patents by Inventor Zhiyong Wei
Zhiyong Wei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9518492Abstract: An exhaust system for use with a combustion engine is disclosed. The exhaust system may have an exhaust passageway, a reduction catalyst, a reductant injector, and a controller. The controller may have a NOX/reductant relationship map, and be configured to receive a first input relating to an amount of NOX within the exhaust passageway upstream of the reduction catalyst, and reference the NOX/reductant relationship map to determine an initial amount of reductant that should be directed into the exhaust passageway based on the first input. The controller may also be configured to receive a second input relating to performance of the reduction catalyst, determine an adjustment to the initial amount of reductant based on the second input, and regulate operation of the reductant injector to direct an adjusted amount of reductant into the exhaust passageway. The controller may further be configured to update the NOX/reductant relationship map based on the determined adjustment.Type: GrantFiled: April 23, 2008Date of Patent: December 13, 2016Assignee: Caterpillar Inc.Inventors: Mary Lou Kesse, Zhiyong Wei, Liangtao Zhu
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Patent number: 8738241Abstract: A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps.Type: GrantFiled: May 31, 2011Date of Patent: May 27, 2014Assignee: Caterpillar Inc.Inventors: Michael Evan Hague, Sameer Marathe, Zhiyong Wei, Matthew Stephen Marquette
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Publication number: 20120310489Abstract: A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps.Type: ApplicationFiled: May 31, 2011Publication date: December 6, 2012Applicant: CATERPILLAR, INC.Inventors: Michael Evan Hague, Sameer Marathe, Zhiyong Wei, Matthew Stephen Marquette
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Patent number: 8276371Abstract: An exhaust system for an internal combustion engine includes an upstream segment and a downstream segment connecting with the upstream segment. The downstream segment is a NOx reducing segment having an exhaust gas outlet and a reductant inlet disposed between the exhaust gas outlet and an exhaust gas inlet for the downstream segment. The upstream segment further includes a coating having a catalyst configured to increase a ratio of NO2 to NO in exhaust gases passing through the upstream segment. The coating includes a catalyst distribution, which may be a catalyst coating length, which is linked to a target ratio of NO2 to NO for reducing NOx in the downstream segment. The catalyst distribution in the upstream segment is adapted to increase the ratio of NO2 to NO, while limiting the ratio of NO2 to NO to a ratio optimized for reduction of NOx in the downstream segment.Type: GrantFiled: June 6, 2008Date of Patent: October 2, 2012Assignee: Caterpillar Inc.Inventor: Zhiyong Wei
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Patent number: 8209956Abstract: An emissions control system is disclosed. The emissions control system may have an SCR device that receives a flow of exhaust. The emissions control system may also have an injector that introduces a reduction agent into the flow of exhaust at or upstream of a catalyst within the SCR device. The emissions control system may have a controller in communication with the injector, the controller being configured to calculate a first amount of the reduction agent by using an approximation that at least one of a plurality of SCR reactions must be completed before the remaining SCR reactions commence. The controller may also be configured to adjust the injector according to at least the first amount.Type: GrantFiled: July 31, 2007Date of Patent: July 3, 2012Assignee: Caterpillar Inc.Inventors: Zhiyong Wei, Cho Ying Liang
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Publication number: 20120126671Abstract: The present invention discloses a stereo displaying cabinet with an explosion-proof film comprising: an outer frame with a transparent layer; an automotive explosion-proof film layer which is attached to the transparent layer of the outer frame; a stereo rack, wherein several displaying units are formed by several shelves; a base plate with a light source assembly at the rear of the shelves, wherein several light source units are secured on the base plate; a baffle which is disposed between the base plate with the light source assembly and the stereo rack; wherein the outer frame is connected to the base plate with a removable fit; the photic layer of the explosion-proof film is located at the side of the light source units. The stereo displaying cabinet according to the present invention can both attain the two objects of planar display and stereo display, having an excellent advertisement displaying effect.Type: ApplicationFiled: March 5, 2010Publication date: May 24, 2012Inventor: Zhiyong Wei
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Patent number: 8001769Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust and a filtering device that receives the flow of exhaust. A first sensor may be located at or upstream of the filtering device, the first sensor being configured to measure a first temperature, and an SCR catalyst may be located downstream of the filtering device. The emissions control system may also have an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller in communication with the first sensor. The controller may be configured to predict a change in an ability of the SCR catalyst to store reduction agent using a measured change in the first temperature and adjust the injector according to the predicted change in the storage ability of the SCR catalyst.Type: GrantFiled: August 20, 2007Date of Patent: August 23, 2011Assignee: Caterpillar Inc.Inventors: Zhiyong Wei, Theodore M. Kostek, Christopher Alan Sharp
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Patent number: 7992380Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust, an SCR catalyst situated to receive the flow of exhaust, and an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller configured to calculate a spatially dependent surface coverage of the reduction agent on the SCR catalyst and substantially stop injection of the reduction agent when the spatially dependent surface coverage of the reduction agent exceeds a maximum surface coverage of the reduction agent at one or more spatial locations.Type: GrantFiled: August 22, 2008Date of Patent: August 9, 2011Assignee: Caterpillar Inc.Inventors: Zhiyong Wei, Christopher Alan Sharp
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Publication number: 20110030343Abstract: An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) system. The SCR system includes a reductant injection system configured to introduce a reductant into a exhaust stream of a engine, a SCR catalysts configured to reduce NOx in the presence of a reductant, and a SCR monitoring system configured to determine temperatures associated with the SCR system. The SCR system also includes a heat source configured to raise the temperature of the exhaust stream and a controller configured to operate the heat source to reach exhaust stream temperatures in the SCR system of at least about 400 degrees Celsius based on the temperature associated with the SCR system.Type: ApplicationFiled: August 6, 2009Publication date: February 10, 2011Applicant: Caterpillar Inc.Inventors: Matthew Thomas Kiser, Cornelius N. Opris, Alan R. Stockner, Jinhui Sun, Zhiyong Wei
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Patent number: 7832200Abstract: An exhaust system for use with a combustion engine is disclosed. The exhaust system may have an exhaust passageway, and a reduction catalyst disposed within the exhaust passageway. The exhaust system may also have a first sensor located to generate a first signal indicative of an operational parameter of the reduction catalyst, and a second sensor located to generate a second signal indicative of a performance parameter of the reduction catalyst. The exhaust system may further have an injection device located to inject reductant upstream of the reduction catalyst, and a controller in communication with the combustion engine, the first sensor, the second sensor, and the injection device. The controller may be configured to determine a NOX production of the combustion engine, determine an amount of reductant that should be injected based on the NOX production and the first signal, and adjust the amount based on the second signal.Type: GrantFiled: April 23, 2008Date of Patent: November 16, 2010Assignee: Caterpillar IncInventors: Mary Lou Kesse, Chris L. Wynkoop, Zhiyong Wei, Michael S. Lukich, Wade D. Scrivner, Amit Jayachandran
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Publication number: 20100229539Abstract: An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) device. The system contains no significant amount of catalyzed material upstream of the SCR device.Type: ApplicationFiled: March 16, 2009Publication date: September 16, 2010Applicant: Caterpillar Inc.Inventors: JOHN P. TIMMONS, JAMES J. DRISCOLL, ZHIYONG WEI
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Publication number: 20100101221Abstract: Catalysts, systems, and methods disclosed herein provide for reduced NOx emissions in the exhaust stream of a lean burning engine. The catalysts include two different types of selective catalytic reduction (SCR) catalysts (i.e., two different types of catalysts that may catalytically reduce NOx using a reductant). The first SCR catalyst (116) is an SCR catalyst having a composition that produces a reductant (e.g., an HC-SCR catalyst that produces ammonia) and the second catalyst (118) is an SCR catalyst (e.g., NH3-SCR) having a composition that reduces NOx using the reductant produced by the first SCR catalyst (116).Type: ApplicationFiled: October 28, 2008Publication date: April 29, 2010Applicant: Caterpillar Inc.Inventors: Sylvain Joseph Charbonnel, Zhiyong Wei, James Joshua Driscoll, Ronald Silver, Corey Stefanick
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Publication number: 20090301065Abstract: An exhaust system for an internal combustion engine includes an upstream segment and a downstream segment connecting with the upstream segment. The downstream segment is a NOx reducing segment having an exhaust gas outlet and a reductant inlet disposed between the exhaust gas outlet and an exhaust gas inlet for the downstream segment. The upstream segment further includes a coating having a catalyst configured to increase a ratio of NO2 to NO in exhaust gases passing through the upstream segment. The coating includes a catalyst distribution, which may be a catalyst coating length, which is linked to a target ratio of NO2 to NO for reducing NOx in the downstream segment. The catalyst distribution in the upstream segment is adapted to increase the ratio of NO2 to NO, while limiting the ratio of NO2 to NO to a ratio optimized for reduction of NOx in the downstream segment.Type: ApplicationFiled: June 6, 2008Publication date: December 10, 2009Inventor: Zhiyong Wei
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Publication number: 20090266059Abstract: An exhaust system for use with a combustion engine is disclosed. The exhaust system may have an exhaust passageway, a reduction catalyst, a reductant injector, and a controller. The controller may have a NOX/reductant relationship map, and be configured to receive a first input relating to an amount of NOx within the exhaust passageway upstream of the reduction catalyst, and reference the NOX/reductant relationship map to determine an initial amount of reductant that should be directed into the exhaust passageway based on the first input. The controller may also be configured to receive a second input relating to performance of the reduction catalyst, determine an adjustment to the initial amount of reductant based on the second input, and regulate operation of the reductant injector to direct an adjusted amount of reductant into the exhaust passageway. The controller may further be configured to update the NOX/reductant relationship map based on the determined adjustment.Type: ApplicationFiled: April 23, 2008Publication date: October 29, 2009Inventors: Mary Lou Kesse, Zhiyong Wei, Liangtao Zhu
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Publication number: 20090266058Abstract: An exhaust system for use with a combustion engine is disclosed. The exhaust system may have an exhaust passageway, and a reduction catalyst disposed within the exhaust passageway. The exhaust system may also have a first sensor located to generate a first signal indicative of an operational parameter of the reduction catalyst, and a second sensor located to generate a second signal indicative of a performance parameter of the reduction catalyst. The exhaust system may further have an injection device located to inject reductant upstream of the reduction catalyst, and a controller in communication with the combustion engine, the first sensor, the second sensor, and the injection device. The controller may be configured to determine a NOX production of the combustion engine, determine an amount of reductant that should be injected based on the NOX production and the first signal, and adjust the amount based on the second signal.Type: ApplicationFiled: April 23, 2008Publication date: October 29, 2009Inventors: Mary Lou Kesse, Chris L. Wynkoop, Zhiyong Wei, Michael S. Lukich, Wade D. Scrivner, Amit Jayachandran
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Publication number: 20090049827Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust, an SCR catalyst situated to receive the flow of exhaust, and an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller configured to calculate a spatially dependent surface coverage of the reduction agent on the SCR catalyst and substantially stop injection of the reduction agent when the spatially dependent surface coverage of the reduction agent exceeds a maximum surface coverage of the reduction agent at one or more spatial locations.Type: ApplicationFiled: August 22, 2008Publication date: February 26, 2009Inventors: Zhiyong WEI, Christopher Alan Sharp
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Publication number: 20090049828Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust and a filtering device that receives the flow of exhaust. A first sensor may be located at or upstream of the filtering device, the first sensor being configured to measure a first temperature, and an SCR catalyst may be located downstream of the filtering device. The emissions control system may also have an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller in communication with the first sensor. The controller may be configured to predict a change in an ability of the SCR catalyst to store reduction agent using a measured change in the first temperature and adjust the injector according to the predicted change in the storage ability of the SCR catalyst.Type: ApplicationFiled: August 20, 2007Publication date: February 26, 2009Inventors: Zhiyong Wei, Theodore M. Kostek, Christopher Alan Sharp
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Publication number: 20090031710Abstract: An emissions control system is disclosed. The emissions control system may have an SCR device that receives a flow of exhaust. The emissions control system may also have an injector that introduces a reduction agent into the flow of exhaust at or upstream of a catalyst within the SCR device. The emissions control system may have a controller in communication with the injector, the controller being configured to calculate a first amount of the reduction agent by using an approximation that at least one of a plurality of SCR reactions must be completed before the remaining SCR reactions commence. The controller may also be configured to adjust the injector according to at least the first amount.Type: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Inventors: Zhiyong Wei, Cho Ying Liang
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Publication number: 20080295499Abstract: An exhaust treatment system is provided having a first exhaust passageway fluidly connected to an engine. A particulate filter and a selective catalytic reduction catalyst are situated within the first exhaust passageway. In addition, the system has a first oxidation catalyst located within the first exhaust passageway upstream of the particulate filter and the selective catalytic reduction catalyst. The system also has a second exhaust passageway fluidly connected to the first exhaust passageway upstream and downstream of the first oxidation catalyst. The exhaust treatment system further has a sensor configured to sense a parameter indicative of an exhaust gas temperature. Furthermore, the system has a controller configured to direct exhaust gas through the first oxidation catalyst when the exhaust gas temperature is below a threshold temperature and direct the exhaust gas through the second exhaust passageway when the exhaust gas temperature is above the threshold temperature.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Inventors: James Joshua Driscoll, Cho Ying Liang, Ronald Silver, Corey Marie Shannon, Zhiyong Wei
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Patent number: D953252Type: GrantFiled: May 6, 2021Date of Patent: May 31, 2022Inventor: ZhiYong Wei